on magnetic tapes

Patents Grantslast 30 patents

  • Information Patent Grant

    3774156

    • Patent number 3,774,156
    • Issue date Nov 20, 1973
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    2883187

    • Patent number 2,883,187
    • Issue date Apr 21, 1959
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS